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If alpha and beta are complementary angl...

If `alpha` and `beta` are complementary angles to each other, the find the value of `(1-sin^2 alpha)(1-cos^2 alpha)(1+cot^2 beta)(1+tan^2 beta)`

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UNITED BOOK HOUSE-HOWRAH ZILLA SCHOOL-EXERCISE
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  7. ABC is a right angled triangle whose angleA = 90^@, AD is perpendicula...

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  8. Draw a circle with radius 2.8 cm in length. Take point apart from the ...

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  9. Geometrically find the value of sqrt(38) (only traces of construction ...

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  10. If sec theta+ tan theta = 2+sqrt5, show that sin theta+ cos theta = 3/...

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